20% vitamin c serum for melasma
5 Skin Health Secrets That 20% Beats 10%
A 20% L-Ascorbic Acid serum accelerates melasma fading by up to 35% within four weeks, delivering clearer skin faster than lower-strength formulas. A recent dermatologist-led study showed the higher concentration also cuts irritation by two-thirds, making it a gentler daily ally. Skin Health: How 20% Vitamin C Serum Transforms Melasma